Question

Which inequality has -25 in its solution set?
y + 11 > -9
y - 17 Less-than-or-equal-to -46
30 Less-than-or-equal-to y + 5
y + 20 > -30

Answer 1

Solution:-

Let's Check !

y + 11 > - 9

y > -9 - 11 •°• y > -20

so it is not required inequality

y - 17 ≤ -46

y ≤ 17 - 46 •°• y ≤ -29

so it is not required inequality

y + 20 > - 30

y > -30 - 20 •°• y > - 50

so it is not required inequality

30 ≤ y + 5

30 - 5 ≤ y

25 ≤ y

it is required inequality has -> 25 in its solution set.

Rules of inequality of real number:-

1) If 0<a<b and k>0 then a±k<b±k, ka<kb, ak<bk

2) If 0<a<b and k<0 then ka>kb, ak>bk

Answer 2

its y+20>-30 because

I got it on my test